41. Letter from J. Oliver Lampen, American Cyanamid Company to Joshua Lederberg Publication: Produced: 21 November 1945 Subject(s): Escherichia coliMutationResearch Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
42. Letter from Joshua Lederberg to J. Oliver Lampen Publication: Produced: 8 August 1946 Subject(s): MutationTerminology as Topic Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
43. Letter from Raymond L. Latarjet to Joshua Lederberg Publication: Produced: 8 December 1949 Subject(s): Cell Culture TechniquesMutationRadiation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
44. Letter from Joshua Lederberg to Raymond L. Latarjet Publication: Produced: 12 April 1949 Subject(s): Cell Culture TechniquesEscherichia coliLysogenyMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
45. Letter from Joshua Lederberg to Seymour Lederberg Publication: Produced: 27 April 1949 Subject(s): MutationUltraviolet RaysMentors Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
46. Letter from D. Lewis to Joshua Lederberg Publication: Produced: 25 October 1948 Subject(s): GeneticsMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
47. Letter from Joshua Lederberg to D. Lewis Publication: Produced: 8 November 1948 Subject(s): EnzymesMutationGenetics Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
48. Letter from Joshua Lederberg to Margaret Lieb Publication: Produced: 14 February 1949 Subject(s): Recombination, GeneticMutationCell Culture Techniques Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
49. Letter from Joshua Lederberg to Michael Doudoroff Publication: Produced: 9 March 1948 Subject(s): Escherichia coliGenetics, MicrobialMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
50. Letter from Joshua Lederberg to Gerry Lindegren Publication: Produced: 29 July 1946 Subject(s): Cell Culture TechniquesGenesMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)